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(-) Description

Title :  CRYSTAL STRUCTURE OF THE COMPLEX OF XYLANASE-ALPHA-AMYLASE INHIBITOR PROTEIN (XAIP-I) WITH TREHALOSE AT 1.87 A RESOLUTION
 
Authors :  M. Kumar, S. Kumar, M. Sinha, P. Kaur, S. Sharma, T. P. Singh
Date :  19 Aug 10  (Deposition) - 22 Sep 10  (Release) - 22 Sep 10  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.87
Chains :  Asym./Biol. Unit :  A
Keywords :  Tim Barrel, Trehalose, Hydrolase Inhibitor (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. Kumar, S. Kumar, M. Sinha, P. Kaur, S. Sharma, T. P. Singh
Crystal Structure Of The Complex Of Xylanase-Alpha-Amylase Inhibitor Protein (Xaip-I) With Trehalose At 1. 87 A Resolution
To Be Published
PubMed: search

(-) Compounds

Molecule 1 - HAEMENTHIN
    Chains: A
    Organism Scientific: SCADOXUS MULTIFLORUS
    Organism Taxid: 82246
    Synonym: XYLANASE AMYLASE INHIBITORY PROTEIN, XAIP

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 5)

Asymmetric/Biological Unit (3, 5)
No.NameCountTypeFull Name
1ACT3Ligand/IonACETATE ION
2PO41Ligand/IonPHOSPHATE ION
3TRE1Ligand/IonTREHALOSE

(-) Sites  (5, 5)

Asymmetric Unit (5, 5)
No.NameEvidenceResiduesDescription
1AC1SOFTWARESER A:52 , SER A:54 , ACT A:275 , HOH A:434BINDING SITE FOR RESIDUE TRE A 7347
2AC2SOFTWAREHIS A:51 , SER A:52 , HOH A:274 , HOH A:278 , HOH A:280 , HOH A:495BINDING SITE FOR RESIDUE PO4 A 273
3AC3SOFTWARELEU A:46 , ILE A:48 , GLY A:50 , HIS A:51 , HOH A:365 , TRE A:7347BINDING SITE FOR RESIDUE ACT A 275
4AC4SOFTWAREGLY A:40 , SER A:82 , LEU A:83 , ASP A:84 , ASP A:88 , HOH A:492BINDING SITE FOR RESIDUE ACT A 276
5AC5SOFTWARESER A:85 , ARG A:86 , HOH A:499 , HOH A:501BINDING SITE FOR RESIDUE ACT A 277

(-) SS Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1A:22 -A:63
2A:157 -A:186

(-) Cis Peptide Bonds  (3, 3)

Asymmetric/Biological Unit
No.Residues
1Gly A:33 -Phe A:34
2Tyr A:159 -Pro A:160
3Trp A:253 -Asp A:254

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3OIH)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3OIH)

(-) Exons   (0, 0)

(no "Exon" information available for 3OIH)

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:272
 aligned with B2ZGS7_9ASPA | B2ZGS7 from UniProtKB/TrEMBL  Length:272

    Alignment length:272
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270  
         B2ZGS7_9ASPA     1 ANLDIAVYWGQNFDERSLEATCDTGNYAYVIIGFLNTFGGGQTPALDISGHSPSGLEPQIKHCQSKNVKVLLSIGGPKGPYSLDSRSDANDLAVYLFNNFLLPPGHSENRPFGNAVLDGIDFHIEHGGPSQYQLLANILSSFRLAGTEFALTAAPQCVYPDPNLGTVINSATFDAIWVQFYNNPQCSYSSGNAEALMNAWREWSMKARTKKVFLGFPAHPDAAGSGYMPPEKVKFHVFPAAKKSYKFGGIMLWDSYWDTVSNFSSKILGEGW 272
               SCOP domains d3oiha_ A: automated matches                                                                                                                                                                                                                                                     SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---Glyco_hydro_18-3oihA01 A:4-237                                                                                                                                                                                                            ----------------------------------- Pfam domains
         Sec.struct. author ....eeeee.......hhhhhhhh....eeeeeeeeeee..eeeee........hhhhhhhhhhhh..eeeeeeee........hhhhhhhhhhhhhhhhh.................eeeeee......hhhhhhhhhhhhhhh....eeee..........hhhhhhh....eeeee.............hhhhhhhhhhhhhhh...eeeeeee.hhhhh.....hhhhhhhhhhhhhh....eeeeeeehhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3oih A   1 ANLDIAVYWGQNFDERSLEATCDTGNYAYVIIGFLNTFGGGQTPALDISGHSPSGLEPQIKHCQSKNVKVLLSIGGPKGPYSLDSRSDANDLAVYLFNNFLLPPGHSENRPFGNAVLDGIDFHIEHGGPSQYQLLANILSSFRLAGTEFALTAAPQCVYPDPNLGTVINSATFDAIWVQFYNNPQCSYSSGNAEALMNAWREWSMKARTKKVFLGFPAHPDAAGSGYMPPEKVKFHVFPAAKKSYKFGGIMLWDSYWDTVSNFSSKILGEGW 272
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270
   Legend:   → Mismatch (orange background)
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  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3OIH)

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: Glyco_hydro_tim (488)

(-) Gene Ontology  (4, 4)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (B2ZGS7_9ASPA | B2ZGS7)
molecular function
    GO:0015066    alpha-amylase inhibitor activity    Stops, prevents or reduces the activity of alpha-amylase.
    GO:0004553    hydrolase activity, hydrolyzing O-glycosyl compounds    Catalysis of the hydrolysis of any O-glycosyl bond.
biological process
    GO:0005975    carbohydrate metabolic process    The chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y. Includes the formation of carbohydrate derivatives by the addition of a carbohydrate residue to another molecule.
    GO:0043086    negative regulation of catalytic activity    Any process that stops or reduces the activity of an enzyme.

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 Related Entries

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UniProtKB/TrEMBL
        B2ZGS7_9ASPA | B2ZGS7: 3d5h 3hu7 3m7s

(-) Related Entries Specified in the PDB File

3hu7 CRYSTAL STRUCTURE OF XYLINASE-ALPHA-AMYLASE INHIBITOR PROTEIN